geosynthetics geophysics geochemistry GEOSYNTHETICS Golder has fully equipped geosynthetics and geotechnical laboratories that test materials quickly, accurately, and cost-effectively. The geosynthetic laboratory can test for the mechanical and physical characteristics of seamed and unseamed geomembrane, geotextile, geonet, geocomposites, geogrid, and geosynthetic clay liner materials. As an example of our capability, we can test 100 geomembrane seam destructive samples in a normal business day. Our geosynthetics lab is accredited by the Geosynthetic Accreditation Institute, a division of Geosynthetic Institute (GSI), to conduct more than 40 ASTM tests, as indicated in the list to the right.